Mit curvature tehna Keratometry test chungchang tlem han zir ila.

Mit enfiahna i neih tawh chuan doctor-in i mit a en a, hmanraw chi hrang hrang hmangin a enfiah thin tih i hmu tawh ngei ang. A chang chuan, "Hei hian eng nge a en leh?" Chutiang mit test pawimawh tak pakhat chu Keratometry an ti a. Vawiin hian eng nge a nih, engvanga tih nge a nih, engtin nge a tih tih kan sawi dawn a ni.

Keratometry hi eng nge ni?

A awlsam zawngin, keratometry hi i mit hmalam hawi, zungbun ang maia lang, mitmeng (cornea) natural curvature tehna test a ni. Cornea hi kan mit chungah transparent cover ang mai a ni. A curvature dik tak hi mit fiah nan a pawimawh hle.

He keratometry test hian eng nge a hmuhchhuah?

He test hian astigmatism tih hming pu condition i neih leh neih loh a tichiang ber a ni. Astigmatism hi refractive error a awm fo a, mit a fiah lo hle.

Ngaihtuah teh, mit hrisel chu baseball ang maiin a round tlangpui. Tichuan, mit chhunga êng a luh chuan hmun khatah a focus a, chiang takin kan hmu a ni. Mahse astigmatism nei mit, chu chu mit (cornea) chu rugby ball ang mai a ni a, a nih loh leh spoon hnunglam ang deuhin a sei deuh emaw, a sir khatah a inher zawk emaw a ni. Tichuan , mit chhunga êng a luh chuan hmun khatah a focus lo va, mit hmuh chu a fiah lo. He keratometry test hian mitmeng (cornea) curvature a teh thin.

Engtin nge he keratometry test hi tih a nih? A awlsam khawp mai!

Hei hi test rang tak leh hrehawm lo tak a ni. I mit specialist chuan a office-ah a ti thei ang. Chumi atan chuan ni bik emaw, hun bik emaw i ruat a ngai lo. I mit enfiahna pangngaiah tih theih a ni a, i doctor-in astigmatism i neih a rinhlelh chuan a hranin tih theih a ni bawk.

Tin, glasses aiah contact lens i vuah dawn a nih chuan, emaw, mitdel surgery atana i inbuatsaih dawn a nih chuan he keratometry test hi i nei ngei ang.

Tunah chuan hei hi engtin nge an tih tih i lo en ang u. Doctor hian keratometer an tih hmanrua a hmang a . Telescope ang deuh a ni. Mahse, arsi hla tak tak a en lo va, hnai tak atanga i mit a en zawk a ni. Test neihna tur step hrang hrangte chu hetiang hi a ni:

1. Thut tir i ni ang a, keratometer hian i hmui tan a support a, i hmai chawlhna hmun a nei bawk . I lu i dah chuan doctor chuan i mit nena inmil tur device chu a siamrem ang.

2. Tichuan device chhung lam en turin an ti che a. Binocular hmanga en ang mai a ni. A châng chuan mit dang enfiah loh chu khar turin an ti che a.

3. Doctor chuan device chhunga thil awm chu a hrilh che a.Thlalak en turin hrilh rawh. A tlangpuiin circle pathum a nei a, a nih loh leh target ang chi plus sign leh minus sign nei a nei bawk.

4. Tichuan, doctor chuan zawi zawiin device chu a manipulate a , target te chu a sawn kual a, positive sign te chu an inhnaih theihna hmunah a rawn hruai lut ta a ni.

5. Number a thlen veleh doctor chuan a tehnate chu a record thin. Tichuan, device mit dang chu a siamrem a, chu mit chu chutiang bawk chuan a test bawk.

Camera focus siamrem ang maiin han ngaihtuah teh. Doctor chuan i mitmeng (cornea) curve nen a inmil em tih chu a en reng a ni.

Hmu? A awlsam hle mai, a ni lawm ni? He test hi minute tlemte chhungin i zo thei ang.

Hei hi a that lohna emaw, hlauhawmna emaw a awm em?

Ni lo, risk a awm lo. Keratometer atanga eng lo chhuak chu i en chuan a eng deuh mai thei a, mahse i mit leh mit hmuhna a tichhe lovang.

Mahse thil tenawm tak pakhat a awm. Chu chu, he keratometry test hian i mitmeng (cornea) tehna dik tak aiin a tlem berah a pe a ni. A chhan chu he test hian i mit (cornea) chu a teh a, a zungbun (perfectly spherical), hmun tinah a round inang vek anga ngaih a ni. Mahse a takah chuan mi zawng zawng mit hian natural variation tenau te a nei vek a. Chuvangin mit (cornea) hi sphere ang chiah a ni lo.

Mahse chu chuan he test hi a tangkai lo tihna erawh a ni lo. Khawvel map nei globe pakhat han mitthla teh. Lei chung hian tlang, tuifinriat leh leilung chi hrang hrang a nei tih kan hria a, chuvangin a hrual lo va, a zungpui chiah pawh a ni lo. Mahse globe hi kan awmna hmun hriatthiamna atana hmanraw tha tak a ni. Keratometry pawh chutiang bawk chu a ni. Cornea tehna dik tak ni lo mah se, mi tam tak astigmatism rang tak leh dik taka hriat theihna atan a tangkai hle.

Tunah chuan mit lama mithiam thenkhat chuan keratometry hmang lovin corneal mapping (corneal topography leh corneal tomography tia hriat bawk) an hmang ta zawk a ni. Chungte chu a hmasawn zawk a, tehna dik zawk a pe bawk. Tunah chuan astigmatism hmuhchhuahna atan an lar chho ta hle a ni. I doctor chuan keratometry test result finfiah nan corneal mapping test a ti thei bawk.

He K chhiarna hi eng nge ni? Value pangngai a awm em?

Keratometry test result chu K reading an ti a . Mit lam doctor te chuan hei hi diopter an tih unit ah an teh thin .

A tlangpuiin mit hrisel tak chuan êng chu diopter 43 velin a tichhe thei a ni. Cornea hian curve steeper (steep corneas) a neih chuan he value hi a sang chho thin. Curve a tlem (flatter corneas) chuan he value hi a tlahniam thin.

• I mit (cornea) chu a round ṭha famkim a nih chuan a chung zawng zawngah K value inang a nei a ni.
• Mahse astigmatism i neih chuan i mitmeng (cornea) hian K value pahnih a lantir ang . Pakhat chu a curved berna value a ni a, pakhat chu cornea curved tlem ber, flat part a value a ni. Keratometry test-ah hian he danglamna hi a lang a, khawiah nge curvature a sang ber leh a hniam ber tih a lang bawk.

Heng K reading te hi doctor tan chuan i mit (cornea) curvature record nan a pawimawh tak zet a ni. Heng tehnate hian doctor chu i mit hmuhna tidanglamtu chu eng nge ni tih a hriat theih nan a pui a ni. Tin, mitdel surgery neih a ngai a nih chuan he K reading hi intraocular lens thlan nan pawh hman a ni.

Heng result leh number te hi i tan hriatthiam a harsa mai thei. Mahse, lungngai suh. I mit lam doctor emaw doctor emaw chuan i mit damdawi pek dan chu a hriatthiam theih nan a pui thei che a ni. Tin, i tan glasses tha ber ber, contact lens emaw, mit siamthatna tur dang emaw i thlan theih nan an pui thei bawk.

Engtikah nge mit lam doctor kan hmuh ang?

I mit specialist chuan eng chen nge mit enfiah fo tur tih a hrilh ang che.

Kan tar chhoh zel chuan kan mit hi a pianphungah a pianphung a inthlak a, chuvangin astigmatism hi a danglam thei a ni. Mahse, astigmatism-a inthlak danglamna lian tak, rang taka lo awm chu natna dang, enkawl vat ngai, keratoconus ang chi chhinchhiahna a ni thei. Chuvangin, i mit emaw, i mit emaw a inthlak danglamna i hmuh chuan – a bik takin i mit hmuh dan pangngai aia tlem emaw, a fiah lo emaw a nih chuan – mit lam doctor pan nghal ngei ang che.

A tawp berah chuan thil hriat reng tur

Keratometry hi mit lama mithiamte’n astigmatism an hriat theihna atana an hman tlanglawn tak a ni. A hming hi thil buaithlak tak angin lang mah se, a takah chuan test hi a awlsam khawp mai. I tih tur chu device bik en la, a chunga chhinchhiahna awmte chu engtikah nge a line up tih i doctor hnenah hrilh mai tur a ni. Chu tehnate chu i mitmeng (cornea) curvature tehna atan a hmang ang.

Hei hi pass leh fail test a ni lo tih hre reng ang che. I astigmatism hi eng ang pawhin na mahse, siamthat theih dan a awm. I mit doctor chuan i mit tihthianghlim dan tur tha ber ber a rawn rawt ang che.

Chuvangin, mit enfiah tura i kal dawna keratometry tih tura tih i nih chuan hlau suh. I mit hriselna atan a pawimawh hle.

` Keratometry, Astigmatism, Cornea, Mit lama harsatna, Mit Exam, K Chhiar, Mit hriselna